Verge fusee watch, France or Switzerland, early XIX century.
Diameter of the case is about 49mm.

Movement features classical verge escapement with fusee and chain.
Brass case has traces of gilt, it's signed as "Leton" for Brass inside the back cover.

Condition
Movement is running condition, time keeping is not tested and guaranteed, cleaning is recommended.
The dial seems to be in good condition.
Case is closing with some effort, otherwise ok.
Mineral crystal, Breguet hands.
Watch comes with a key.